Who has enough powerful magic.

And what do you mean by "flexible"?

So, it can be adapted to different playstyles. There are spells that push enemies back on the scale (Hive, Summon Swarm), there are defensive spells (Shield), spells that increase the army (Summon Elementals and Phoenix), and much more. This allows her to be as useful as possible in various situations. If only they hadn't removed the wall of fire...